Thanks. I'm surprised it won't charge at 7kW at home. I'm pretty sure the owners manual says it will charge at 7kW using the usual domestic 7kW chargers. Obviously you need a proper 7kW charger installed. The one supplied with the car, to plug into an ordinary 13A socket, will only charge at 2.3kW, which is a limitiation of a 13A plug. That's fast enough for my usage so I won't bother with a 7kW installation.
What I probably will do is fit a 16A blue industrial socket outside my house, cut off the 13A plug and use a blue 16A plug. Unlike a 13A plug, this will never overheat. I'll also make or buy a 13A plug to 16A socket lead to charge elsewhere. I also have a Type2 to Type 2 cable (not supplied with the SE but I acquired one without paying £100+) so I can charge at public chargers. This will be rare as I don't intend to venture too far afield in the Citigo. That's what my Yeti is for:-)
In theory it should charge at 11kW from a 3 phase supply. Not common at homes in the UK, though usual in France etc.
The SE model I have doesn't have the combined connector to allow rapid DC charging.
Charged it fully yesterday and it's claiming 196 miles range. Won't do that with aircon (or heating) running but still seems impressive compared to the official 178 miles.
Got my C-Charge exemption and will take it into central London today.